For some reason I seem to be pretty hard on the plastic "feet" on the bottom of my Macbook Pro. I've busted three of them right off and the fourth was looking pretty dodgy. So, I popped the fourth one off and replaced them with sugru.?I used one pack of black sugru, divided it into five equal pieces and reserved one piece for an unrelated repair. The remaining four pieces I shaped into chubby "coins" the same size as the original feet. Underneath the feet the case is open to the inside, and I wanted to be careful not to fill up the guts of the computer by squishing sugru through the holes. Using pressure around the edges gave a nice convex surface and ensured a good bond with the case. After it looked like all the feet were pretty equal, I put a bit of soapy water on a flat tabletop and set the computer down for a second to make sure everything was level. ?I turned the computer over to let the sugru cure. Sugru is working much better than the original plastic feet. In addition to being a lot more sturdy, the grip of sugru on a desk is excellent. As a bonus, my Macbook Pro got much quieter! ?I had not realized how loud the disk drive hummed when the feet were gone. Thanks a bunch, I don't know what else would have worked so well! Mark, Pixar.